Calculating machine



Dea, 59 936. Q C, CHASE, 2?@639984 CALCULATING MACHINE FiledNov. a, 1935 2 Sheets-Sheet l Dec. 15, 1936. G, c. CHASE CALCULATING MACHINE 2 Sheets-Sheet 2 INVENTOR. GeagYqe C. Cas e N @57% ATTORNEY.

Filed Nov. 8, 1935 Patented Dec. l5,

I'he invention relates and more particularly two table multiplier,

1,842,584 issued January 26, 1932 to George C.

Chase, with verted registration plicationof George C. 1935 Serial No. 3,091.

the newly d The system of inverted registration comprises the registration of the selected value, in combination with an inverted tens transfer action whe only when the lower order numeral wheel fails to pass from 9 to 0 or words, through 91/2 regi As fully described in connection with the modied form of the invention disclosed in application No. 3,091, semi-inversion of additive or subtractive calculations provides for a maximum of five steps in registering the digits 5 to 9 and the digits 1 and subtraction, some rotating forwardly and the same cycle of opera While the present invention is shown as applied to this semi-inverted form of the application, it is of course evident to the fully inverted system.

The invention consists .and combination of pa appended claims.

. In the accompanying drawings, illustrating the invention:

Fig. 1 is a right hand side elevation (with parts broken away and shown in section) of a calculating machine embodying the invention.

Fig. 2 is a right hand elevation of the multiplier control mechanism.

Fig. 3 is a detail view for the pair -of cylinders.

Fig. 4 is a diagrammatic of actuator cylinders in Fig. .5 is a similar vie 2 position.

Fig. 6 is a front elevation parts broken away.

Figs. 7, 8 and 9 are transfer mechanism.

For the sake of simplicity the invention is herein shown as applied of the well known Thomas type, as illustrated,

for example in the Britis No. 27,364 of 1903.

described in co-pending apbeing registered complementally to 4 normally both in addition Obviously the inventionA 2,063,984 cALoULA'rING MACHINE George C. Chase, South Orange, N. J., assigner to Monroe Calculating Machine Company, Orange, N. J., a corporation of Delaware Application November 8, 1935, Serial No. 48,810

l 6 Claims. (Cl. 23S-75) to calculating machines to means for using the described in Patent No. p

diiferent construction.

iscovered principle of in- Chase filed January 23,

' slidably mounted on digital complement of a bevel gearing 13 from rein a transfer will occur 1 to 4 and the correspo any of the digits 1 to 9, 'H the inverted digits 5 register normally the of the numeral wheels namely 2 and 4, also others reversely during tion responding teeth 91 complementally the that it is applicable novel construction set forth in .the

in the rts, as

scribed later.

of the driving gearing means of a slide 9|, e

projection of a pair normal relative position. w, with the cylinders 1n position with I, 2 3

of the machine with detail views of the tens sively Each of the cylinders 10, 1| two sets of teeth 96, 91, 10 being adapted to re Opposedfbevel gears 19, are

FFlcE might be readily applied to machines of totally In the drawings actuator cylinders 10 and 1I correspond to the plus and minus cylinders 10, 1| of the aforementioned application Serial No. 3,091, but are arranged and provided with groups of teeth in the following manner:

In each of the columns plus cylinder 10 is square shaft 12, driven by ythe drive shaft 14. Minus 10 cylinder 1| is slidably mounted on a square shaft 95 suitably supported inthe framing Gearconnections 15 serve tov drive I in opposite direction to' above cylthe cylin- 1 X multiplier An actuator pinion'18, rotatably xed to and 3 slidable upon a shaft 8|, to be brought into mesh w of teeth 96 of cylinders justment 'along the fa is normally adapted ith any of the series 10, 1| by graduated adce of the cylinders by xtending up through the 4 cover plate and provided with a button 92. 'I'he teeth 96 are so arrangedthat movement of the actuator pinion 18 from rear to front of the machine will bring said pinion into co-operative 4 teeth of the forwardly 4 rotating cylinder 10 and with 5, I, 3, 2, I of the reversely rotating cylinder 1|, progresixed upon a 16 is provided with the teeth 96 of cylinders gister the normal digits riding teeth 96 of cylinder .t0 9. 2 The teeth 91 of cylinders 10 are adapted to products of 1X2 and 2X2, the units of the products of 6 2 and 7X2, namely 2 and 4, and the corof cylinder 1l to register 2 products-of 3X2 and 4x2, as 4 and 2, also the units of products of 8X2 2. The product, 10, of 5X2 the cylinders T0 and 1|, this the tens of the higher prod- 3 ucts being registered by other means to be desleeve slidably mounted upon the squared shaft 50 8| upon which the actuator pinion 18 is also t0 a Calculatmg machine mounted, these bevel gears being shiftable to engage alternatively with the bevel gear 82 ath patent to Samuel Tate, tached to the numeral wheel 83. This shifting movement .means of a. 55

Cil

` slidable bar 84 located between the gears 19 and 80, and adjustable by a change lever (not shown) in the manner well known in Thomas type calculating machines.

With the bevel gear 19 engaged with gear 82, the wheel 83 will be rotated addtively if the pinion 18 is engaged by the teeth of cylinder 10, and subtractively by the engagement of the teeth of cylinder 1|. On the other hand, when the gear 80 is engaged with gear 82, the effect of the cylinders 10, 1| upon the Wheel 83 is reversed, cylinder 10 acting subtractively and cylinder 1| additively.

With the machine set for normal or 1 table operation, multiplication is performed by the registration of repeated additions, and division by the registration of. repeated subtractions.

Normally, as a numeral wheel registration passes from 9 to 0, 10 will be registered on the next higher numeral wheel 83, by the action of a tooth 2| of the lower order wheel acting upon levers 22 and 23, in a manner hereinafter more fully described, lever 23 acting to slide a tooth 24 rearwardly upon the shaft 12 of the higher order wheel. The hub of tooth 24 rotates with the shaft 12 and after the teeth of cylinders 10, 1| have completed their action, this tooth 24 will pass through the teeth of tens transfer pinion 85, slidably mounted upon the shaft 8|.

Since the entire drive to the numeral wheels 83 is reversed by the adjustment of the bar 84 no special reversing means for the tens transfer is necessary.

The cylinders 10, 1|, and the teeth 24 on the series of shafts 12, are mounted in varying angular positions, so that the teeth 24 will act successively from right to left of the machine, in well known manner.

Tens transfer inversion The following means are provided to invert a tens transfer whenever setting knob 92 stands in position corresponding to a selected value from As the setting knob 92 is moved from 4 to 5 position, an anti-friction roller 90, secured to slide 9|, will engage the surface 89 of an arm 86, pivotally mounted upon a rod 88 extending transversely of the machine, as shown. A projection 98 of arm 86 normally overlies the roller 99, carried on the upper end of an arm |00, pivotally mounted at upon lever |02. Lever |02 is fulcrumed upon a support rod |03 and has a yoke engaging carry pinion 85 of the next higher order column.

Engagement of roller 90 therefore with surface 89 of arm 86 will cause said arm'to be rocked downwardly about point 88, whereupon projection 98 acting against roller 99 will depress arm |00, rocking the lever |02 counter-clockwise about its fulcrum |03, to bring the pinion 85 into the path of movement of the related tens transfer tooth 24. If however a lower order dial 83 passes through 91/2 position, the tooth 2| of said dial will rock the lever 22, forcing the tooth 54 of lever 23 (Fig. 8) into one of the shallow notches 58 of lever 22, to move the tooth 24 out of the plane of gear 85, inverting the transfer as described in application Serial No. 3,091.

At the end of each cycle of operation, the tens transfer parts are restored to normal position by means of cam teeth 59 (Fig. 9), mounted upon the shafts 12, which engage the fingers 60 of restoring levers 6|, loosely mounted upon the shafts 8| and provided with upward extensions engaging perforations of the levers 22, to move said levers into centralized position, with the deep notches 55 thereof opposite the teeth 54 of levers 23.

2 X multiplier In order to register the partial products of a 2 X multiplier a setta le key |04 is provided. rThis key extends through the keyboard and is pivoted at its lower end on bell crank lever |05, fulcrumed upon a stud |08, fixed in the left hand framing of the machine. Secured in the upper and lower arms of lever are transversely extending rods |01, |08 supported similarly from the right hand framing of the machine.

Rods |01, |08 engage suitable channels of the plus and minus cylinders 10, 1|, so that, upon depression of the (2 X) key |04, cylinder 1.0 will be pushed a half step rearwardly and cylinder 1| will be drawn a half step forwardly along their shafts.

The above described movement of cylinders 10, 1| is adapted to move the (l X) multiplier teeth 96 out of cooperative relation with actuator pinion 18, in its graduated positions of adjustment, and to move the (2 X) multiplier teeth 91 into cooperative relation with said pinion.

It will be noted from an inspection of Figure 5 that there are four series of four teeth 91 each and four series of two teeth. Two of each of these series is located on the forwardly rotating cylinder 10 and two series on the reversely rotating register 1|. The series represent the units of the products of digits 1 9, multiplied by 2.

Tens transfer inversion Depression of the (2 X) key will also, in the following manner, provide for a transfer inversion whenever a selector button 92 stands at the 3, 4, 8 or 9 position.

For each column o the machine there is pivotally secured to the rod |01 a link |09 having pivotal connection at I0 with the arm |00, and as key |04 is depressed, rocking bell crank |05, link |09 will rock arm |00 forwardly, to bring the roller 99 from beneath the projection 98 of leverr86 and under the projection of an arm |2, similar to the arm 86, and pivotally mounted upon shaft 88. Arm ||2 is provided with cam elevations ||3, ||4, adapted as roller 90 is moved to the 3-4 or 8 9 setting position to cause said arm to be depressed and held in depressed position.

Depression of arm ||2 will cause projection acting through roller 99, arm |00 and lever |02, to slide the carry pinion 85 into active position relative to tooth 24, to invert the tens transfer as previously described.

Provision is made, as described in application Serial No. 3,091, for setting and unsetting a tens transfer if the numeral wheel moves twice through the 91/2 position during a single cycle of operation, because of a registering movement being followed by a transfer movement of opposite sign.

Partial product tens Special means are provided to register the tens of the partial products l0, 12, 14, 16 and 18, comprising for each order a link ||5, pivotally secured at the forward end thereof to the shaft |01 and at its rearward end to an arm I6. Arm |'|8 is pivotally mounted'upon a lever ||1, fulcrumed.

upon shaft |03, saidlever having a yoke engag-f ing the grooved hub of gear I8, slidably mounted upon square shaft 8| of the next higher order.

Upon depression of key |04 link 5 will rock arm I8 to bring a roller 9, secured in the upper end of said arm, beneath projection 98 of arm 86 so that as setting button 92 is moved to 5 9 position, roller 90 will depress arm 88 and projection 98, acting through 'roller H9, arm ||6 and lever ||1 will slide the gear |18 into the path of movement of a tooth |20, formed integrally with the plus cylinder 10, said tooth having been moved a half step toward pinion |8 during the rearward movement of the cylinders 10 previously described,

Tens product tooth |20 is timed to act immediately before the teeth 91 of the related cylinder 10. Since however there is a maximum of only four teeth in the 2 table, the action of tooth |20 may coincide with that of the first tooth of the 1 table.

Key |04 is latched down during a cycle of operation by engagement of projection 2| of said key with the underside of the keyboard plate. Automatic key release means, such as described in reference Patent No. 1,842,584, may of course be provided, adapted to release key |04 only after the completion of the cycle in which the operator releases said key.

Overthrow of the parts is prevented, and the accurate location of these parts in normal position is effected by means of check springs 52, .operatingrbetween the teeth ofstart'wheels 53, fixed upon shafts 8|.

Operation Taking the illustrative problemand assuming all the buttons 92 and dials 83 to be standing at and the change lever to be set for The right hand or units button 92 is pulled for- Wardly to a point on its scale indicating 8. 'I'his brings the related actuator pinion 18 into position to be meshed by two of the teeth 96 of the cylinder 1|, and also, through the roller 90 and lever,

tens transfer tooth 24. In the third column the l button 92 is adjusted to the 3 position, providing for the registration of three of the teeth 96 of cylinder and leaving the transfer pinion 85 out of line with the transfer tooth. In the fourth co1- umn the button is drawn down to the 7 register#- ing position, pinion 18 being opposite three teeth 96 of the cylinder 1|, and transfer pinion 85 being brought into line with the transfer. tooth 2|.

In the above described position of the parts a single rotation of shaft 14 would rotate the cyl.- inders 10 additively and cylinders 1| reversely, to register the value 7328 upon the product dials 83 in the manner described in the aforementioned application Serial No. 3,091, the digits 2 and 3 of the tens and hundreds column being registered normally and the digits 8 and 7 of the units and thousands columns being registered as -2 and 3. In this condition of the machine seven cycles would be required to register the product 51,296 of 7328X7.

Use of the 2 X key |04 however will provide for a four cycle operation to register said product, in the following manner:

As previously stated, depression of key |04A will slide cylinders 10 a half step rearwardly and cylinders 1| a half step forwardly. Thus in the units column four teeth 91 of cylinder 1| will be moved into cooperation with the pinion 18, to register upon a single cycle of operation the complemental units partial product (4) of 8 X2, in the tens column four teeth 91 of cylinder 10 will be moved into relation with pinion 18, to register the normal product (4) of 2 X2, in the hundreds column four teeth 91 of cylinder 1|` will be moved into relation with pinion 18, to register the complemental product (4) of 3 X2, and in the thou-f sands column four teeth 91 of cylinder 10 will be moved into relation with pinion 18 to register the normal units partial product (4) of 7X2.

The tens of the product 8 2 of the units column and of '7X2 in the thousands column will be registered because depression of key |04 has rocked the rollers ||9 of arms I6 beneath the projections 98 of arms 86, said arms being held in depressed position by roller 90 of the units and thousands column buttons 92, to bring the tens tooth |20 of the related order into cooperation with the higher order gear I8.

Since registration of the values 6 9 calls for a tens transfer inversion, it will be apparent that Vin the units and hundreds columns, the roller 90 will engage projections H4 and ||3 of the related arms I2 and depress said arms whereupon, roller 99 being beneath the projections transfer pinions 85 of the next higher ordersA will be moved into cooperative position relative to their respective teeth 24. In both these columns 4 is subtracted from 0, the numeral wheels passing from (l to 9 and teeth 2|, acting through levers 22 and 23, will act to unset the transfer, as previously described. f

In the tens and thousands columns, the setting buttons 92 having been set at the 2 and 7 positions respectively, roller 90 of said keys will be opposite the low portions of arms I2 and the pinions 85 in these columns will be left out of plane with their related teeth 24. In these columns the related numeral wheels 83 will not pass from 9 to 0, and again no transfer will occur.

As a result of the operation above described the numeral wheels 83 will register 14,656, the product of 7328 2. The calculation will be completed thus:v

three cycles of operation would first be performed with the 2 X key in depressed position (registering the product of six times 7328) and one cycle of operation with said key in raised position.

I claim:

1. In a calculating machine having numeral wheels; digit selectory devices, actuators including elements settable by said devices and cooperating elements adapted to register on said numeral wheels the selected values and complements thereof or alternatively to register products of such values and complements thereof, cooperating tens product gearing, normally disabled means for setting the tens product gearing to and from operative position in accordance with the setting of the selector devices, means settable to adjust the cooperating actuator elements from selected value to product registering condition, and means connected with the last named means and settable therewith to enable the normally disabled setting means.

2. In a calculating machine having numeral wheels, digit selector devices, actuators including elements settable by said devices and cooperating elements adapted to register on said numeral wheels the selected values and complements thereof or alternatively to register products of such values and complements thereof, cooperating tens product gearing including slidably mounted pinions, shifting levers engaging said pinions, arms pivotally connected to said levers, control levers adjustable by the selector devices in selecting a higher digit value, a lever settable to adjust the cooperating actuator elements from selected value to product registering condition, and a link connection between the last-named lever and the pivoted arms and adapted to bring the arms into the path of movement of the control levers.

3. In a calculating machine having numeral wheels, the combination with tens transfer devices between said wheels including elements settable by the lower order wheels and means adjustable to invert the operative and inoperative effect of said elements in their relatively set positions; of digit selector devices, actuators including elements settable by said devices and cooperating elements adapted to register on said numeral wheels the selected values and complements thereof or alternatively to register products of such values and complements thereof, coopcrating normally inactive tens product gearing, control devices adjustable by the selector devices in selecting a higher digit value, and means settable to connect the control devices with the inverting means or alternatively with the tens product gearing.

4. In a calculating machine having numeral wheels, the combination with tens transfer devices between said wheels including elements settable by the lower order wheels and means including slidably mounted pinions adjustable to invert the operative and inoperative effect of said elements in their relatively set positions, shifting levers engaging said pinions, and arms pivotally connected to said levers; of digit selector devices, actuators including elements settable by said devices and cooperating elements adapted to register on said numeral wheels the selected values and complements thereof or alternatively to register products of such values and complements thereof, cooperating tens product gearing including slidably mounted pinions, shifting levers engaging said pinions, arms pivotally connected to said levers, control levers adjustable by the selector devices in selecting a higher digit value, and a lever connected with and operable to set the inversion setting arms or alternatively the tens product setting arms into the path of movement of the control levers.

5. In a calculating machine having numeral wheels, the combination with tens transfer devices between said wheels including elements settable by the lower order wheels and means wdjustable to invert the operative and inoperative eiect of said elements in their relatively set positions; of digit selector devices, actuators including primaryr elements settable by said devices and cooperating elements adapted to register on said numeral wheels the selected values and complements thereof or alternatively to register products of such values and complements thereof, two control devices each diierentially adjustable by the selector devices in accordance with setting of the primary actuator elements to register a selected value or a complement, means settableY to adjust the cooperating actuator elements for selected value or alternatively for product registration, and means connected with the last named means and settable therewith for operation by one or by the other of the control devices to adjust the inverting means,

6. In a calculating machine having numeral Wheels, the combination with tens transfer devices between said wheels including each an element settable by the lower order wheel, and means 'including a slidably mounted pinion adjustable to invert the operative and inoperative effect of said element in its relatively set position, a shifting lever engaging said pinion, and an arm pivotally connected to said lever; of digit selector devices, actuators including elements settable by said devices and cooperating elements adapted to register on said numeral wheels the selected values and complements thereof or alternatively to register, products of such values and complements thereof, two control levers each adjustable by the selector devices in the selection of different given digit values, a lever settable to adjust the cooperating actuator elements for selected value or alternatively for product registration, and a. link connection between the lastnamed lever and the pivoted arm and adapted to bring the arm into the path of movement o1' one or alternatively of the other of said control levers.

GEORGE C. CHASE. 

